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-   -   Opening pittsburgh seam (http://www.sheetmetaltalk.com/showthread.php?t=2732)

cab 04-05-2016 04:02 PM

Opening pittsburgh seam
 
What do you guys use to open the pittsburgh seam to make it easier to put toghether

Bud 04-06-2016 02:37 PM

I'd really only need to maybe open an end with a screw driver? Maybe the machine needs adjusting.

On radius fittings, I'd place a narrow piece of scrap in the piece to be rolled before I roll it. This kept the lock open and easy to add the throat and cheek.

Paul Stalenberg 04-17-2016 12:09 PM

Hi guys
Can someone explain to me what a Pittsburgh seam is?
Maybe a stupid question but I just don't know.

Thanks in advance

Greetings Paul

Paul Stalenberg 04-19-2016 11:58 AM

Hello again!
I know it's perhaps a stupid question but i'm stil curious??

Kind regards Paul

Bud 04-19-2016 12:14 PM

Sorry Paul, I was looking for a picture of one. Its a way that two pieces of a sheet metal fitting are actually put together and locked without additional fasteners.

This seam can be machine fabricated or hand formed.
I'll try to find an image I had as well as a short video I made of hand forming one on the brake.

Paul Stalenberg 04-19-2016 03:01 PM

Hi Bud
Thank you for your explanation.
I hope you can find it.
I apologize to you Bud for being a little inpatient.
Is this method also used in car panels?

Thank you

Greetings Paul

ncscribe 04-19-2016 08:51 PM

Paul, I have not seen it used on an automotive application. Just HVAC. To see one made look at youtube and just type in Pittsburgh seam. There are several done by hand and several done by machine. I have done both and really prefer the machine.. :)

Paul Stalenberg 04-19-2016 10:17 PM

Hi ncsscribe
Thank you,i'll take a look there!

Cheers

Paul

jeffben2 04-20-2016 07:39 PM

Pittsburgh Joint
 
Hey Bud, I tried it with a piece of scrap in it for a radius and it worked. Thanks.

jeffben2 04-20-2016 07:47 PM

Pittsburgh Joint
 
Hey Bud, I tried it with a piece of scrap in it for a radius and it worked. Thanks.


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